CN1178843C - Elevator device - Google Patents

Abstract

The elevator apparatus of the present invention lifts and lowers the car (7) through a gearless driving device (13) in which a traction pulley (12) is directly rotated by a motor (11). The driving device (13) is arranged on the upper part in the hoistway (1). In addition, a part of the driving device (13) is arranged in an area where the car (7) is projected in its ascending and descending direction.

Description

Elevator device

technical field

The invention relates to an elevator device without an independent machine room on the upper part of the hoistway, that is, an elevator device without a machine room.

Background technique

Fig. 10 is a perspective view showing a main part of a conventional elevator apparatus shown in, for example, Japanese Patent No. 2593288, and Fig. 11 is a plan view showing the elevator apparatus of Fig. 10 . In the figure, a pair of car guide rails 2 and a pair of counterweight guide rails 3 are arranged in the hoistway 1 . A drive 4 with a traction pulley 5 is arranged in the upper part of the hoistway 1 .

The middle portion of the main suspension cable 6 is wound around the traction sheave 5 . One end portion 6 a of the main suspension cable 6 is fixed to the upper end portion of the car guide rail 2 , and the other end portion 6 b of the main suspension cable 6 is fixed to the upper end portion of the counterweight guide rail 3 . The car 7 is suspended along the main cable 6 between the traction sheave 5 and the one end 6a. The lower end of the car 7 is provided with a pair of pulleys 8 around which the main suspension cable 6 is wound.

A counterweight 9 is suspended along the main cable 6 between the traction sheave 5 and the other end 6b. The upper end of the counterweight 9 is provided with a heavy pulley 10 around which the main suspension cable 6 is wound.

As shown in FIG. 11, in such a conventional elevator apparatus, the driving device 4 is disposed between the vertically projected area of the car 7 and the wall surface 1a of the hoistway 1, thereby eliminating the need for a machine room.

However, due to the configuration of the driving device 4, it is necessary to ensure that the side space of the car 7 matches the thickness of the driving device 4, thereby increasing the plane size of the hoistway 1.

Contents of the invention

The present invention aims to solve the above problems, and an object of the present invention is to provide an elevator apparatus capable of reducing the planar size of the hoistway.

The elevator device of the present invention has: a hoistway, a car and a counterweight that are alternately lifted and lowered in the hoistway, a main suspension cable that suspends the car and the counterweight in the hoistway, and is arranged on the upper part of the hoistway and is A gearless driving device for lifting and lowering the car and the counterweight by the main suspension cable. The driving device has: a motor, and a traction pulley that is wound around the main suspension cable and directly rotated by the above-mentioned motor. A part of the driving device is arranged on the In the projected area along the lifting direction, the height of the portion of the car that overlaps with the driving device when the car is projected in the lifting direction is lower than the height of the central part of the car.

In addition, the elevator apparatus of the present invention has: a hoistway, a car and a counterweight that are alternately raised and lowered in the hoistway, a main cable that suspends these cars in the hoistway, and an upper portion of the hoistway that is arranged at the same time. Part of the driving device that is arranged in the projected area of the car along its lifting direction and that lifts the car through the main suspension cable is fixed to the fixed railing on the upper part of the car, and is installed on the side of the car. The upper part, and the moving railing that can change the position between the expansion position in the driving device area projected along the lifting direction of the above-mentioned car and the storage position outside the above-mentioned driving device area, the position of the moving railing is carried out. A railing detection switch for detection, and a control device for restricting the ascending range of the car based on the information from the railing detection switch.

Description of drawings

Fig. 1 is a perspective view showing a main part of an elevator apparatus according to Embodiment 1 of the present invention;

Fig. 2 is a top view showing the elevator device of Fig. 1;

Fig. 3 is a plan view showing an elevator apparatus according to Embodiment 2 of the present invention;

Fig. 4 is a plan view showing an elevator apparatus according to Embodiment 3 of the present invention;

Fig. 5 is a plan view showing an elevator apparatus according to Embodiment 4 of the present invention;

Fig. 6 is an explanatory diagram showing the relationship between the driving device and the railing in the elevator device shown in Fig. 1-Fig. 5;

Fig. 7 is a side view showing main parts of an elevator apparatus according to Embodiment 5 of the present invention;

Fig. 8 is a plan view showing an elevator apparatus according to Embodiment 6 of the present invention;

Fig. 9 is a side view showing the main part of the elevator device of Fig. 8;

Fig. 10 is a perspective view showing main parts of a conventional elevator device;

Fig. 11 is a plan view showing the elevator apparatus of Fig. 10 .

Detailed ways

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Implementation form 1:

Fig. 1 is a perspective view showing main parts of an elevator apparatus according to Embodiment 1 of the present invention; Fig. 2 is a plan view showing the elevator apparatus of Fig. 1 . In the figure, a pair of car guide rails 2 and a pair of counterweight guide rails 3 are arranged in the hoistway 1 .

A drive device 13 with an electric motor 11 and a traction pulley 12 is provided in the upper part of the hoistway 1 . The driving device 13 is a gearless device in which the traction pulley 12 is directly rotated by the electric motor 11 . For example, such a gearless drive unit 13 is used in the device shown in Japanese Patent Application Laid-Open No. 7-187187.

The middle portion of the main suspension cable 6 is wound around the traction sheave 12 . One end portion 6 a of the main suspension cable 6 is fixed to the upper end portion of the car guide rail 2 , and the other end portion 6 b of the main suspension cable 6 is fixed to the upper end portion of the counterweight guide rail 3 . The car 7 is suspended along the main cable 6 between the traction sheave 12 and the one end 6a. The lower end of the car 7 is provided with a pair of pulleys 8 around which the main suspension cable 6 is wound.

A counterweight 9 is suspended along the main cable 6 between the traction sheave 5 and the other end 6b. The upper end of the counterweight 9 is provided with a heavy pulley 10 around which the main suspension cable 6 is wound. The upper part of the car 7 is provided with a railing 14 used for maintenance work.

In addition, the drive device 13 is supported on, for example, the guide rails 2 and 3 above the lifting range of the car 7 . A part of the driving device 13 is arranged inside the area where the car 7 is projected in the ascending and descending direction.

In this elevator device, since the driving device 13 is supported above the lifting range of the car 7, and a part of the driving device 13 is arranged inside the area where the car 7 is projected in the lifting direction, the number of hoistways can be reduced. The space between the wall surface 1a of 1 and the car 7 reduces the plane size of the hoistway 1. In other words, what must be arranged between the wall surface 1a and the car 7 is a part of the traction sheave 12. If the main suspension cable 6 extending downward from the traction sheave 12 does not interfere with the car 7, the driving device 13 can Most overlap with the upper part of the car 7 .

Implementation form 2:

In addition, in Embodiment 1, the driving device 13 is arranged obliquely with respect to the wall surface 1a due to the restriction on the arrangement of the main suspension cable 6, but as shown in FIG. 15 and wind the main suspension cable 6 so that the driving device 13 can be configured so that the rotating shaft of the traction pulley 12 is at right angles to the wall surface 1a, which can further reduce the distance between the wall surface 1a and the car 7, and reduce the distance between the hoistway 1. Flat size.

Implementation form 3:

Fig. 4 is a plan view showing an elevator apparatus according to Embodiment 3 of the present invention. In this example, a counterweight 9 is arranged on the rear side of the car 7 . The driving device 13 is arranged obliquely above the corner portion of the car 7 . Therefore, the distance between the car 7 and the wall surface 1a of the hoistway 1 can be reduced. In addition, the corner portion 14a of the handrail 14 is separated from the corner portion of the car 7, thereby avoiding interference with the driving device 13.

Implementation form 4:

Fig. 5 is a plan view showing an elevator apparatus according to Embodiment 4 of the present invention. In this example, a deflection wheel 17 is provided in the upper part of the hoistway 1 . The part between the traction pulley 12 and the heavy pulley 10 on the deflection pulley 17 is wound with the main suspension cable 6 . Therefore, the driving device 13 is arranged so that the rotating shaft of the traction sheave 12 is parallel to the width direction of the car 7 (left-right direction in the drawing).

Therefore, by providing the deflection pulley 17, even if the depth of the car 7 increases and the center distance between the heavy pulley 10 and the car 7 is large, a part of the driving device 13 can be arranged above the car 7. That is, it is possible to sufficiently cope with the dimensional change between the car 7 and the counterweight 9, and to increase the degree of freedom in the layout.

Fig. 6 is an explanatory view showing the relationship between the driving device 13 and the handrail 14 in the elevator apparatus shown in Figs. 1 to 5 . The handrail 14 is arranged on the inner side of the car 7 than the driving device 13 . In addition, the railing 14 is arranged so that it does not interfere with the driving device 13 when the counterweight 9 collides with a buffer (not shown) arranged at the bottom of the hoistway 1 and the car 7 rises to the position indicated by the two-dot chain line in the figure. . The height dimension H of the top gap can thus be reduced.

Implementation form 5:

In addition, in Embodiment 1-3, although the railing 14 is erected on the upper part of the car 7, as shown in FIG. .

In addition, as shown in FIG. 7, although the top lighting 16 is provided on the top of the car 7, since the top lighting 16 is not provided at the peripheral portion 7a of the car 7, the height of the peripheral portion 7a can also be reduced. Therefore, the gap between the peripheral portion 7a and the driving device 13 can be sufficiently ensured when the car 7 is raised, and the interference between the two can be more reliably prevented.

Implementation form 6:

Fig. 8 is a plan view showing an elevator apparatus according to Embodiment 6 of the present invention; Fig. 9 is a side view showing main parts of the elevator apparatus in Fig. 8 . In the figure, the driving device 21 for raising and lowering the car 7 is arranged in the upper part of the hoistway 1 . In addition, a part (actually most) of the driving device 21 is arranged in the area where the car 7 is projected in the ascending and descending direction.

The top of the car 7 is fixed with a fixed railing 22 . A moving rail 23 that can reciprocate in the left and right direction in FIG. 8 is connected to the fixed rail 22 . The moving railing 23 can change its position between the expansion position A in the projected area of the driving device 21 in the lifting direction of the car 7 and the storage position B outside the projected area of the driving device. Both the fixed railing 22 and the movable railing 23 are used as safety barriers during maintenance work.

A railing detection switch 24 for detecting the position of the moving railing 23 is provided between the fixed railing 22 and the moving railing 23 . The railing detection switch 24 is connected with the control device 25 which controls the operation of the elevator device. In FIG. 8, the control device 25 is represented by a block. The control device 25 limits the ascending range of the car 7 based on the information from the railing detection switch 24 .

An anti-collision switch device 26 for stopping the ascent of the car 7 by contact is provided at a lower portion of the drive device 21 . The anti-collision switch device 26 has: a plurality of installation tools 27, the contact body 28 that can move up and down supported on these installation tools 27, a plurality of connecting rods 29 that connect the installation tool 27 and the contact body 28, and pass to the contact body 28 The contact detection switch 30 operated by moving above.

In such an elevator apparatus, when the movable rail 23 is stored in the storage position B, the rail detection switch 24 is biased, and the car 7 can run fully automatically at a rated speed. In addition, even when the car 7 stops on the uppermost side, the moving rail 23 does not interfere with the drive device 21 .

In addition, when the operator boards the upper part of the car 7, switches to manual operation and pulls out the moving railing 23 to the storage position B, the equipment such as the counterweight 9 can be moved from the range surrounded by the moving railing 23. repair. And can carry out potential elimination to railing detection switch 24, limit the ascending range of car 7, thereby more reliably prevent moving railing 23 and driving device 21 from interfering.

In addition, when the operator performs maintenance work directly under the driving device 21 while raising the car 7, if the operator touches the contact body 28 and pushes the contact body 28 up, the contact detection switch 30 works and the car 7 is activated. The ascent of box 7 is stopped. Safety can thus be further improved.

In addition, although the moving rail 23 which slides to the left-right direction of FIG.

Claims (5)

1. lift appliance has:

Access trunk,

The cab and the counterweight of mutual lifting in this access trunk,

The main carrying cable in described access trunk with these cabs and balance weight hanging, and

Be configured in the top of described access trunk and make the gearless type actuating device of described cab and described counterweight lifting through described main carrying cable, described actuating device has: electrical motor, and described main carrying cable of winding and the hauling block that directly rotates by described electrical motor,

Wherein, the part of described actuating device is configured in described cab along in the zone of lifting direction projection, with described cab when its lifting direction projection and the height of the described cab of described actuating device lap be lower than the height of described cab central portion.

2. lift appliance as claimed in claim 1 is characterized in that, the part of described actuating device is configured in and will be located at the outside of the railing on described cab top to the zone of the lifting direction projection of described cab.

3. lift appliance as claimed in claim 1 is characterized in that, also have the top that is disposed in the described access trunk, with the main carrying cable winding at the described hauling block of described main carrying cable and the deflecting wheel of the part between the described counterweight.

4. lift appliance as claimed in claim 1 is characterized in that, described lift appliance also comprises:

Be fixed on the fixed railing on described cab top,

Be located at described cab top, and can with described actuating device by the reception position beyond the expanded position in the actuating device zone of the lifting direction projection of described cab and described actuating device zone between the movable railing units of change position,

The railing detector switch that the position of this movable railing units is detected, and

The control setup that the lifting range of described cab is limited according to the information of coming from described railing detector switch.

5. lift appliance as claimed in claim 4 is characterized in that, also is provided with in the bottom of described actuating device to be used for the anti-collision switch device that the rising of described cab stopped by contact.

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